Pixel array

ABSTRACT

A pixel array including a first common line, a first conductive line, a first connection line, a second common line, a second conductive line, a third common line, and a first connection structure is provided. The first common line is located on a first side of a first scan line. The first conductive line includes a first extending portion and a second extending portion. The first connection line crosses the first scan line so as to electrically connect the first extending portion to the second extending portion. The second common line is located on a first side of a second scan line. The second conductive line includes a third extending portion and a fourth extending portion. The first connection structure electrically connect the second common line to the third common line.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a divisional application of and claims the prioritybenefit of a prior application Ser. No. 15/806,332, filed on Nov. 8,2017, now allowed, which claims the priority benefit of Taiwanapplication Ser. No. 106115224, filed on May 9, 2017. The entirety ofeach of the above-mentioned patent applications is hereby incorporatedby reference herein and made a part of this specification.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The invention relates to a pixel array, and more particularly, to apixel array having connection lines.

2. Description of Related Art

In general, a liquid crystal display device is provided with upper andlower substrates. The upper substrate has an electrode film, the lowersubstrate has a common electrode, and a liquid crystal medium is locatedbetween the electrode film and the common electrode. In the prior art, apixel electrode is short-circuited with the common electrode when apixel structure in the liquid crystal display device is malfunction. Themalfunction pixel structure can become a dark spot because the electrodefilm and the common electrode are connected to a same common voltage.

However, given that the electrode film and the common electrode are bothconnected to the same voltage, since the liquid crystal medium cannot besupplied with a sufficient voltage difference, a transmittance of theliquid crystal display device is therefore restricted. Accordingly,there is an urgent need for a solution to the above problem.

SUMMARY OF THE INVENTION

The invention provides a pixel array capable of increasing thetransmittance of the liquid crystal display device.

A pixel array of the invention includes a first scan line, a second scanline, a first data line, a second data line, a first pixel electrode, asecond pixel electrode, a third pixel electrode, a fourth pixelelectrode, a first switch element, a second switch element, a thirdswitch element, a fourth switch element, a first common line, a secondcommon line, a first conductive line, a second conductive line, a thirdcommon line, and a first connection structure. The first data line andthe second data line are respectively disposed intersecting with thefirst scan line and the second scan line. The first pixel electrode andthe second pixel electrode are respectively disposed on a first side ofthe first scan line and a second side of the first scan line. The firstswitch element is electrically connected to the first scan line, thefirst data line and the first pixel electrode. The second switch elementis electrically connected to the second pixel electrode. The firstcommon line is located on the first side of the first scan line. Thefirst conductive line includes a first extending portion and a secondextending portion. The first extending portion is located on the firstside of the first scan line, and the second extending portion is locatedon the second side of the first scan line. The first connection linecrosses the first scan line so as to electrically connect the firstextending portion to the second extending portion. The third pixelelectrode and the fourth pixel electrode are respectively disposed on afirst side of the second scan line and a second side of the second scanline. The third switch element is electrically connected to the secondscan line, the second data line and the third pixel electrode. Thefourth switch element is electrically connected to the fourth pixelelectrode. The second common line is located on the first side of thesecond scan line. The second conductive line includes a third extendingportion and a fourth extending portion. The third extending portion islocated on the first side of the second scan line, and the fourthextending portion is located on the second side of the second scan line.The first connection structure is electrically connected to the secondcommon line and the third common line. The first common line, the secondcommon line and the third common line are electrically connected to afirst voltage, and the first conductive line and the second conductiveline are electrically connected to a second voltage.

A pixel array of the invention includes a scan line, a data line, afirst pixel electrode, a second pixel electrode, a first switch element,a second switch element, a first common line, a first conductive line, aconnection line and a third common line. The data line is disposedintersecting with the scan line. The first pixel electrode and thesecond pixel electrode are respectively disposed on a first side of thescan line and a second side of the scan line. The first switch elementis electrically connected to the scan line, the data line and the firstpixel electrode. The second switch element is electrically connected tothe second pixel electrode. The first common line is located on thefirst side of the scan line. The first conductive line includes a firstextending portion and a second extending portion. The first extendingportion is located on the first side of the scan line, and the secondextending portion is located on the second side of the scan line. Theconnection line crosses the scan line so as to electrically connect thefirst extending portion to the second extending portion. The thirdcommon line includes a third extending portion and a fourth extendingportion. The third extending portion extends along an extendingdirection of the scan line, the fourth extending portion is disposed onthe data line, and the fourth extending portion is connected to thethird extending portion. The first common line and the third common lineare electrically connected to a first voltage, and the first conductiveline is electrically connected to a second voltage.

Based on the above, because the first conductive line and the secondconductive line are applied with the second voltage different from thefirst voltage, the transmittance of the liquid crystal display devicemay be significantly increased by utilizing a voltage difference betweenthe first voltage and the second voltage. Moreover, a damaged pixel unitcan be repaired into the dark spot through the first common line, thesecond common line or the third common line.

To make the above features and advantages of the disclosure morecomprehensible, several embodiments accompanied with drawings aredescribed in detail as follows.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are included to provide a furtherunderstanding of the invention, and are incorporated in and constitute apart of this specification. The drawings illustrate embodiments of theinvention and, together with the description, serve to explain theprinciples of the invention.

FIG. 1A is a top view of a pixel unit in a pixel array according to anembodiment of the invention.

FIG. 1B is a cross-sectional view taken along line AA′ of FIG. 1A.

FIG. 1C is a cross-sectional view taken along line BB′ of FIG. 1A.

FIG. 1D is a top view of another pixel unit in a pixel array accordingto an embodiment of the invention.

FIG. 1E is a cross-sectional view taken along line CC′ of FIG. 1D.

FIG. 2A is a top view of a pixel unit in a pixel array according toanother embodiment of the invention.

FIG. 2B is a top view of another pixel unit in a pixel array accordingto another embodiment of the invention.

FIG. 3 is a top view of a pixel array according to further anotherembodiment of the invention.

FIG. 4 is a top view of a pixel array according to further anotherembodiment of the invention.

FIG. 5 is a top view of a pixel unit in a pixel array according tofurther another embodiment of the invention.

DESCRIPTION OF THE EMBODIMENTS

Reference will now be made in detail to the present preferredembodiments of the invention, examples of which are illustrated in theaccompanying drawings. Wherever possible, the same reference numbers areused in the drawings and the description to refer to the same or likeparts.

The following describes the embodiments with reference to theaccompanying drawings in detail, so as to make the aspects of thepresent disclosure more comprehensible. However, the mentionedembodiments are not intended to limit the scope of the presentdisclosure, and the description of the operation of a structure is notintended to limit an execution sequence. Any device with equivalentfunctions that is produced from a structure formed by a recombination ofelements shall fall within the scope of the present disclosure. Besides,according to industry standards and practices, the drawings are merelyintended to assist the description, and are not drawn according tooriginal dimensions. In practice, dimensions of various features may bearbitrarily increased or decreased to facilitate the description. Sameelements in the description below are indicated by a same referencesign, so as to facilitate the comprehension.

In the present disclosure, when an element is “connected” or “coupled”,it may indicate that the element is “electrically connected” or“electrically coupled”. “Connected” or “coupled” may further be used toindicate that two or more elements operate cooperatively or interactwith each other. Oppositely, when an element is “directly on anotherelement” or “directly connected to” another element, there is nointermediate element. As used herein, “connection” may refer to physicaland/or electrical connection.

As used herein, “about”, “similar”, or “substantially” includes thevalue and an average value of values in an acceptable deviation range ofa specific value determined by a person of ordinary skill in the art,taking the discussed measurement and a specific quantity of errorsrelated to the measurement (that is, limitations of a measurementsystem) into consideration. For example, “substantially” may indicatewithin one or more standard deviations of the value, or within ±10%, or±5%.

Unless otherwise defined, as used herein, all the terms (includingtechnical and scientific terms) have the same meanings as commonlyunderstood by a person of ordinary skill in the art. It will be furtherunderstood that terms defined in commonly used dictionaries shall becomprehended as meanings the same as the meanings in the related art andthe context of the present disclosure, and shall not be comprehended asideal or excessively formal meanings, unless this specification clearlydefined otherwise.

FIG. 1A is a top view of a pixel unit in a pixel array according to anembodiment of the invention. FIG. 1B is a cross-sectional view takenalong line AA′ of FIG. 1A. FIG. 1C is a cross-sectional view taken alongline BB′ of FIG. 1A. FIG. 1D is a top view of another pixel unit in apixel array according to an embodiment of the invention. FIG. 1E is across-sectional view taken along line CC′ of FIG. 1D.

With reference to FIG. 1A to FIG. 1E, the pixel array of the presentembodiment includes a pixel unit 100 and a pixel unit 200. In anembodiment, the pixel unit 100 and the pixel unit 200 are formed on asubstrate BS.

In the pixel unit 100, a first data line DL1 is disposed intersectingwith a first scan line SL1. A first pixel electrode PE1 and a secondpixel electrode PE2 are respectively disposed on a first side W1 and asecond side W2 of the first scan line SL1. In an embodiment, the firstpixel electrode PE1 and the second pixel electrode PE2 are respectivelydisposed on an upper side and a lower side of the first scan line SL1.

Referring to FIG. 1A, FIG. 1B and FIG. 1C together, a first switchelement TFT1 is electrically connected to the first scan lines SL1, thefirst data line DL1 and the first pixel electrode PE1. The first switchelement TFT1 includes a gate electrode G1, a semiconductor layer SM1, asource electrode S1 and a drain electrode D1. The gate electrode G1 iselectrically connected to the first scan line SL1, the source electrodeS1 is electrically connected to the first data line DL1, and the firstpixel electrode PE1 is electrically connected to the drain electrode D1through a contact C1. At least part of the semiconductor layer SM1 islocated between the gate electrode G1, the source electrode S1 and thedrain electrode D1. A second switch element TFT2 is electricallyconnected to the second pixel electrode PE2. The second switch elementTFT2 includes a gate electrode G2, a semiconductor layer SM2, a sourceelectrode S2 and a drain electrode D2. In an embodiment, the gateelectrode G2 is electrically connected to the first scan line SL1, thesource electrode S2 is electrically connected to the first data lineDL1, and the second pixel electrode PE2 is electrically connected to thedrain electrode D2 through a contact C2. At least part of thesemiconductor layer SM2 is located between the gate electrode G2, thesource electrode S2 and the drain electrode D2. In an embodiment, thesource electrode S2 of the second switch element TFT2 may beelectrically connected to the source electrode S1. More specifically,the gate electrode G2 of the second switch element TFT2 is electricallyconnected to the first scan line SL1, and the source electrode S2 of thesecond switch element TFT2 is electrically connected to the first dataline DL1 through the first switch element TFT1.

In the present embodiment, the contact C1 is located above the drainelectrode D1 and a first common line 120. An insulation layer PV1 issandwiched between the drain electrode D1 and the first common line 120,an insulation layer PV2 is sandwiched between the first pixel electrodePE1 and the drain electrode D1, and the contact C1 is located in theinsulation layer PV2. A part of the first pixel electrode PE1 is filledin the contact C1 to be electrically connected to the drain electrodeD1.

A first sharing element ST1 includes a gate electrode SG1, asemiconductor layer SSM1, a source electrode SS1 and a drain electrodeSD1. The source electrode SS1 is electrically connected to the secondpixel electrode PE2 through the contact C2, and the source electrode SS1of the first sharing element ST1 is electrically connected to the drainelectrode D2 of the second switch element TFT2. The drain electrode SD1of the first sharing element ST1 is electrically connected to a firstconductive line 110 through a contact C3. The gate electrode SG1 of thefirst sharing element ST1 is electrically connected to the first scanline SL1. At least part of the semiconductor layer SSM1 is locatedbetween the gate electrode SG1, the source electrode SS1 and the drainelectrode SD1.

The first conductive line 110 includes a first extending portion 112 anda second extending portion 114. The first extending portion 112 islocated on the first side W1 of the first scan line SL1, the secondextending portion 114 is located on the second side W2 of the first scanline SL1, and the first extending portion 112 and the second extendingportion 114 are structurally separated from each other at where thefirst scan line SL1 is located. In an embodiment, the first common line120 is further sandwiched between the first extending portion 112 andthe first scan line SL1, but the invention is not limited thereto. Inother embodiments, the first common line 120 may be located between thesecond extending portion 114 and the first scan line SL1.

The first extending portion 112 and the second extending portion 114extend along an extending direction DR1 of the first data line DL1. Inan embodiment, the first conductive line 110 further includes a firstbranch portion 116 extending along an extending direction DR2 of thefirst scan line SL1. In the present embodiment, the first branch portion116 is located on the second side W2 of the first scan line SL1 andconnected to the second extending portion 114, but the invention is notlimited thereto. In other embodiments, the first branch portion 116 maybe located on the first side W1 of the first scan line SL1 and connectedto the first extending portion 112.

A first connection line 140 crosses the first scan line SL1 so as toelectrically connect the first extending portion 112 to the secondextending portion 114. In an embodiment, the first connection line 140crosses the first scan line SL1 and the first connection line 120 so asto electrically connect the first extending portion 112 to the secondextending portion 114. In an embodiment, one end of the first connectionline 140 is electrically connected to the second extending portion 114of the first conductive line 110 through the contact C3, whereas theother end of the first connection line 140 is electrically connected tothe first extending portion 112 of the first conductive line 110 througha contact C4. In an embodiment, the first connection line 140 is locatedbelow a black matrix (not illustrated).

The contact C4 is located on the first extending portion 112, theinsulation layer PV1 is sandwiched between the first extending portion112 and the first connection line 140, and the contact C4 is located inthe insulation layer PV1. A conductive layer 150 is filled in thecontact C4 so as to electrically connect the first connection line 140to the first extending portion 112 of the first conductive line 110. Inan embodiment, the conductive layer 150 and the first pixel electrodePE1 are made of the same layer.

The contact C3 is located on the second extending portion 114. Theinsulation layer PV1 is sandwiched between the second extending portion114 and the first connection line 140, and the contact C3 is located inthe insulation layer PV1. The conductive layer 150 is filled in thecontact C3 so as to electrically connect the first connection line 140to the second extending portion 114 of the first conductive line 110. Inan embodiment, the conductive layer 150 and the first pixel electrodePE1 are made of the same layer. In an embodiment, the conductive layer150 filled in the contact C3 is separated from the conductive layer 150filled in the contact C4.

In an embodiment, an extending direction of a third common line CL1 issubstantially identical to the extending direction DR1 of the first dataline DL1. In the present embodiment, the third common line CL1 islocated on the first data line DL1 and at least covers a part of thefirst data line DL1, but the invention is not limited thereto.

In an embodiment, the first common line 120 is located on the first sideW1 of the first scan line SL1. The first common line 120 includes agroove OP1, and at least part of the first extending portion 112 of thefirst conductive line 110 is located in the groove OP1. In other words,in a vertical projecting direction of the substrate BS, said at leastpart of the first extending portion 112 overlaps with an accommodatingspace of the groove OP1 of the first common line 120.

Referring to FIG. 1D and FIG. 1E together, in the pixel unit 200, asecond data line DL2 is disposed intersecting with a second scan lineSL2. In an embodiment, the second scan line SL2 of the pixel unit 200 iselectrically connected to the first scan line SL1 of the pixel unit 100.In other words, the second scan line SL2 and the first scan line SL1 arelocated on the same row in the pixel array, but the invention is notlimited thereto. In other embodiments, the second scan line SL2 and thefirst scan line SL1 are separated and located on different rows in thepixel array. A third pixel electrode PE3 and a fourth pixel electrodePE4 are respectively disposed on a first side W3 and a second side W4 ofthe second scan line SL2. In an embodiment, the third pixel electrodePE3 and the fourth pixel electrode PE4 are respectively disposed on anupper side and a lower side of the second scan line SL2. In anembodiment, an extending direction DR3 of the second data line DL2 issubstantially identical to the extending direction DR1 of the first dataline DL1, and an extending direction DR4 of the second scan line SL2 issubstantially identical to the extending direction DR2 of the first scanline SL1.

A third switch element TFT3 is electrically connected to the second scanline SL2, the second data line DL2 and the third pixel electrode PE3.The third switch element TFT3 includes a gate electrode G3, asemiconductor layer SM3, a source electrode S3 and a drain electrode D3.The gate electrode G3 is electrically connected to the second scan lineSL2, the source electrode S3 is electrically connected to the seconddata line DL2, and the third pixel electrode PE3 is electricallyconnected to the drain electrode D3 through a contact C5. At least partof the semiconductor layer SM3 is located between the gate electrode G3,the source electrode S3 and the drain electrode D3.

A fourth switch element TFT4 is electrically connected to the fourthpixel electrode PE4. The fourth switch element TFT4 includes a gateelectrode G4, a semiconductor layer SM4, a source electrode S4 and adrain electrode D4. In an embodiment, the gate electrode G4 iselectrically connected to the second scan line SL2, the source electrodeS4 is electrically connected to the second data line DL2, and the fourthpixel electrode PE4 is electrically connected to the drain electrode D4through a contact C6. At least part of the semiconductor layer SM4 islocated between the gate electrode G4, the source electrode S4 and thedrain electrode D4. In an embodiment, the source electrode S4 of thefourth switch element TFT4 may be electrically connected to the sourceelectrode S3. More specifically, the gate electrode G4 of the fourthswitch element TFT4 is electrically connected to the second scan lineSL2, and the source electrode S4 of the fourth switch element TFT4 iselectrically connected to the second data line DL2 through the thirdswitch element TFT3.

A second sharing element ST2 includes a gate electrode SG2, asemiconductor layer SSM2, a source electrode SS2 and a drain electrodeSD2. The source electrode SS2 is electrically connected to the fourthpixel electrode PE4 through the contact C6, and the source electrode SS2of the second sharing element ST2 is electrically connected to the drainelectrode D4 of the fourth switch element TFT4. The drain electrode SD2of the second sharing element ST2 is electrically connected to a secondconductive line 210 through a contact C7. The gate electrode SG2 of thesecond sharing element ST2 is electrically connected to the second scanline SL2. At least part of the semiconductor layer SSM2 is locatedbetween the gate electrode SG2, the source electrode SS2 and the drainelectrode SD2.

The second conductive line 210 includes a third extending portion 212and a fourth extending portion 214. The third extending portion 212 islocated on the first side W3 of the second scan line SL2, and the fourthextending portion 214 is located on the second side W4 of the secondscan line SL2. The third extending portion 212 and the fourth extendingportion 214 extend along the extending direction DR3 of the second dataline DL2. In an embodiment, the second conductive line 210 furtherincludes a second branch portion 216 extending along the extendingdirection DR4 of the second scan line SL2. In an embodiment, the secondbranch portion 216 of the pixel unit 200 is electrically connected tothe first branch portion 116 of the pixel unit 100. In an embodiment,the first branch portion 116 is electrically connected to the fourthextending portion 214 of the second conductive line 210 through thesecond branch portion 216 of the second conductive line 210. In anembodiment, the first conductive line 110 and the second conductive line210 commonly constitute a mesh structure in the extending direction ofthe scan line and the extending direction of the data line, such thatthe pixel array can provide a more uniform voltage distribution.

A second common line 220 is located on the first side W3 of the secondscan line SL2. In an embodiment, the second common line 220 of the pixelunit 200 is electrically connected to the first common line 120 of thepixel unit 100.

In an embodiment, the third common line CL1 is electrically connected tothe second common line 220. In an embodiment, the third common line CL1is disposed intersecting with the second common line 220, and the thirdcommon line CL1 is electrically connected to the second common line 220through a first connection structure CS1. The third common line CL1 andthe second common line 220 are applied with the same voltage. In anembodiment, the pixel unit 200 is adjacent to the pixel unit 100, thesecond data line DL2 is adjacent to the first data line DL1, and thethird common line CL1 is located above the first data line DL1.

A contact C8 is located on the second common line 220. The insulationlayer PV1 is sandwiched between the insulation layer PV2 and the secondcommon line 220, the contact C8 is located in the insulation layer PV1and the insulation layer PV2, at least part of the first connectionstructure CS1 is electrically connected to the second common line 220through the contact C8, and the first connection structure CS1 iselectrically connected to the third common line CL1. In the presentembodiment, the insulation layer PV1 and the insulation layer PV2 aresandwiched between the first connection structure CS1 and the secondcommon line 220, but the invention is not limited thereto. In otherembodiments, only one of the insulation layer PV1 and the insulationlayer PV2 is sandwiched between the first connection structure CS1 andthe second common line 220. In an embodiment, the first connectionstructure CS1 and the third common line CL1 are made of the same layer.In an embodiment, the first common line 120, the second common line 220and the third common line CL1 commonly constitute a mesh structure inthe extending direction of the scan line and the extending direction ofthe data line, such that the pixel array can provide a more uniformvoltage distribution.

In the pixel array of the present embodiment, the first common line 120,the second common line 220 and the third common line CL1 areelectrically connected to a first voltage, and the first conductive line110 and the second conductive line 210 are electrically connected to asecond voltage. In an embodiment, a liquid crystal display deviceincluding the pixel array of the invention is provided with upper andlower substrates. The upper substrate has an electrode film applied withthe first voltage, and the first conductive line 110 and the secondconductive line 210 are applied with the second voltage different fromthe first voltage. Accordingly, the transmittance of the liquid crystaldisplay device may be significantly increased by utilizing the voltagedifference between the first voltage and the second voltage. Inaddition, when a pixel unit is damaged, the damaged pixel unit can berepaired into the dark spot through the first common line 120, thesecond common line 220 or the third common line CL1.

In an embodiment, the first scan line SL1, the second scan line SL2, thefirst common line 120, the second common line 220, the first conductiveline 110 and the second conductive line 210 are made of the same layer.In an embodiment, the first data line DL1, the second data line DL2 andthe first connection line 140 are made of the same layer. In anembodiment, the first pixel electrode PE1, the second pixel electrodePE2, the third pixel electrode PE3, the fourth pixel electrode PE4, thethird common line CL1 and the first connection structure CS1 are made ofthe same layer.

Based on the above, in the pixel array of the present embodiment, thefirst common line 120, the second common line 220 and the third commonline CL1 are electrically connected to the first voltage, and the firstconductive line 110 and the second conductive line 210 are electricallyconnected to the second voltage. So the voltage difference applied tothe liquid crystal medium in the liquid crystal display device may beincreased so as to effectively increase the transmittance of the liquidcrystal display device. In addition, when a pixel unit is damaged, thedamaged pixel unit can be repaired into the dark spot through the firstcommon line 120, the second common line 220 or the third common lineCL1.

FIG. 2A is a top view of a pixel unit in a pixel array according toanother embodiment of the invention. FIG. 2B is a top view of anotherpixel unit in a pixel array according to another embodiment of theinvention. It should be noted that, the embodiment of FIG. 2A and FIG.2B adopts the reference numbers and part of the content in theembodiment of FIG. 1A to FIG. 1E, where identical or similar referencenumbers are used to indicate identical or similar components, andrepeated description for the same technical contents is omitted. Theomitted part of the description can refer to the foregoing embodiments,which are not repeated in the following embodiments.

A pixel array in the embodiment of FIG. 2A and FIG. 2B includes a pixelunit 300 and a pixel unit 400. The embodiment of FIG. 2A and FIG. 2B isdifferent from the embodiment of FIG. 1A to FIG. 1E in that, in theembodiment of FIG. 2A and FIG. 2B, a first conductive line 310, a secondconductive line 410, a first common line 320 and a second common line420 are different from the first conductive line 110, the secondconductive line 210, the first common line 120 and the second commonline 220 in FIG. 1A to FIG. 1E.

With reference to FIG. 2A, in the pixel unit 300, the first conductiveline 310 includes a first extending portion 312 and a second extendingportion 314. The first extending portion 312 is located on the firstside W1 of the first scan line SL1, and the second extending portion 314is located on the second side W2 of the first scan line SL1. The firstextending portion 312 and the second extending portion 314 extend alongthe extending direction DR1 of the first data line DL1. In anembodiment, the first conductive line 310 further includes a firstbranch portion 316 extending along the extending direction DR2 of thefirst scan line SL1. In the present embodiment, the first branch portion316 is connected to the second extending portion 314, but the inventionis not limited thereto. In other embodiments, the first branch portion316 is connected to the first extending portion 312.

A first connection line 340 crosses the first scan line SL1 so as toelectrically connect the first extending portion 312 to the secondextending portion 314. In an embodiment, one end of the first connectionline 340 is electrically connected to the second extending portion 314of the first conductive line 310 through the contact C3, whereas theother end of the first connection line 340 is electrically connected tothe first extending portion 312 of the first conductive line 310 throughthe contact C4.

In an embodiment, the first extending portion 312 of the firstconductive line 310 is substantially overlapping with a middle part ofthe first pixel electrode PE1, and divides the first pixel electrode PE1into left and right halves. In an embodiment, the first pixel electrodePE1 includes a plurality of slits with different extending directions,and the first extending portion 312 is located on the first pixelelectrode PE1 at an intersection of the slits with the differentextending directions. In an embodiment, the second extending portion 314of the first conductive line 310 is substantially overlapping with amiddle part of the second pixel electrode PE2, and divides the secondpixel electrode PE2 into left and right halves. In an embodiment, thesecond pixel electrode PE2 includes a plurality of slits with differentextending directions, and the second extending portion 314 is located onthe second pixel electrode PE2 at an intersection of the slits with thedifferent extending directions.

The first common line 320 includes a main portion 322, a trunk portion324A and a trunk portion 324B. The main portion 322 extends along theextending direction DR2 of the first scan line SL1. The trunk portion324A and the trunk portion 324B extend along the extending direction DR1of the first data line DL1 and are connected to the main portion 322. Inan embodiment, the trunk portion 324A and the trunk portion 324B overlapwith an edge of the first pixel electrode PE1. In an embodiment, thetrunk portion 324A and the trunk portion 324B are located on two sidesof the first pixel electrode PE1. The first extending portion 312 of thefirst conductive line 310 is located between the trunk portion 324A andthe trunk portion 324B. In the present embodiment, the first common line320 can shelter electric fields of the pixel electrodes and the datalines, so that the pixel array can operate more stably.

With reference to FIG. 2B, in the pixel unit 400, the second conductiveline 410 includes a third extending portion 412 and a fourth extendingportion 414. The third extending portion 412 is located on the firstside W3 of the second scan line SL2, and the fourth extending portion414 is located on the second side W4 of the second scan line SL2. Thethird extending portion 412 and the fourth extending portion 414 extendalong the extending direction DR3 of the second data line DL2. In anembodiment, the second conductive line 410 further includes a secondbranch portion 416 extending along the extending direction DR4 of thesecond scan line SL2. In an embodiment, the second branch portion 416 ofthe pixel unit 400 is electrically connected to the first branch portion316 of the pixel unit 300. The first branch portion 316 of the pixelunit 300 is electrically connected to the second conductive line 410. Inan embodiment, the first conductive line 310 and the second conductiveline 410 commonly constitute a mesh structure in the extending directionof the scan line and the extending direction of the data line, such thatthe pixel array can provide a more uniform voltage distribution.

In an embodiment, the second common line 420 includes a main portion422, a trunk portion 424A and a trunk portion 424B. The main portion 422extends along the extending direction DR4 of the second scan line SL2.The trunk portion 424A and the trunk portion 424B extend along theextending direction DR3 of the second data line DL2 and are connected tothe main portion 422. The second common line 420 is located on the firstside W3 of the second scan line SL2. In an embodiment, the second commonline 420 of the pixel unit 400 is electrically connected to the firstcommon line 320 of the pixel unit 300. A first connection structure CS2is electrically connected to the second common line 420 and the thirdcommon line CL1 through the contact C8. In an embodiment, the firstcommon line 320, the second common line 420 and the third common lineCL1 commonly constitute a mesh structure in the extending direction ofthe scan line and the extending direction of the data line, such thatthe pixel array can provide a more uniform voltage distribution.

In the pixel array of the present embodiment, the first common line 320,the second common line 420 and the third common line CL1 areelectrically connected to a first voltage, and the first conductive line310 and the second conductive line 410 are electrically connected to asecond voltage. Based on the above, the first conductive line 310 andthe second conductive line 410 are applied with the second voltagedifferent from the first voltage. Accordingly, the transmittance of theliquid crystal display device may be significantly increased byutilizing the voltage difference between the first voltage and thesecond voltage. In addition, if a pixel unit is damaged, the damagedpixel unit can be repaired into the dark spot through the first commonline 320, the second common line 420 or the third common line CL1.

FIG. 3 is a top view of a pixel array 10 according to further anotherembodiment of the invention. It should be noted that, the embodiment ofFIG. 3 adopts the reference numbers and part of the content in theembodiment of FIG. 1A to FIG. 1E, where identical or similar referencenumbers are used to indicate identical or similar components, andrepeated description for the same technical contents is omitted. Theomitted part of the description can refer to the foregoing embodiments,which are not repeated in the following embodiments.

With reference to FIG. 3, the pixel array 10 includes the pixel unit100, the pixel unit 200 and a pixel unit 500, where the pixel unit 500is similar to the pixel unit 100.

In the pixel array 10, the first scan line SL1 electrically connect thesecond scan line SL2 to a third scan line SL3, and the first data lineDL1 is located between the second data line DL2 and a third data lineDL3. In an embodiment, extending directions of the first data line DL1,the second data line DL2 and third data line DL3 are substantiallyidentical, and extending directions of the first scan line SL1, thesecond scan line SL2 and the third scan line SL3 are substantiallyidentical.

A fifth pixel electrode PE5 and a sixth pixel electrode PE6 arerespectively disposed on a first side W5 of the third scan line SL3 anda second side W6 of the third scan line SL3. A fifth switch element TFT5is electrically connected to the third scan line SL3, the third dataline DL3 and the fifth pixel electrode PE5. A sixth switch element TFT6is electrically connected to the sixth pixel electrode PE6.

A fourth common line 520 is located on the first side W5 of the thirdscan line SL3. A third conductive line 510 includes a fifth extendingportion 512 and a sixth extending portion 514. The fifth extendingportion 512 is located on the first side W5 of the third scan line SL3,and the sixth extending portion 514 is located on the second side W6 ofthe third scan line SL3. A second connection line 540 crosses the thirdscan line SL3 so as to electrically connect the fifth extending portion512 to the sixth extending portion 514. In an embodiment, the fifthextending portion 512 and the sixth extending portion 514 extend alongan extending direction of the third data line DL3, and the thirdconductive line 510 further includes a third branch portion 516extending along the extending direction of the third scan line SL3. Thefirst branch portion 116, the second branch portion 216 and the thirdbranch portion 516 are electrically connected to each other. In thepresent embodiment, the first conductive line 110, the second conductiveline 210 and the third conductive line 510 are electrically connected tothe second voltage.

The third common line CL1 is located above the first data line DL1, afifth common line CL2 is located above the second data line DL2, and asixth common line CL3 is located above the third data line DL3. In anembodiment, the third common line CL1, the fifth common line CL2 and thesixth common line CL3 are made of the same layer. The first common line120, the second common line 220, the third common line CL1, the fourthcommon line 520 are electrically connected to the first voltage.

In an embodiment, a quantity ratio of the connection lines to theconnection structures in the pixel array is 2 to 1, but the invention isnot limited thereto. In other embodiments, the quantity ratio of theconnection lines to the connection structures in the pixel array may beadjusted based on actual requirements.

Based on the above, the first conductive line 110, the second conductiveline 210 and the third conductive line 510 in the pixel array 10 areapplied with the second voltage different from the first voltage.Accordingly, the transmittance of the liquid crystal display device maybe significantly increased by utilizing the voltage difference betweenthe first voltage and the second voltage. In addition, when a pixel unitis damaged, the damaged pixel unit can be repaired into the dark spotthrough the first common line 120, the second common line 220, the thirdcommon line CL1, the fourth common line 520, the fifth common line CL2or the sixth common line CL3.

FIG. 4 is a top view of a pixel array 20 according to further anotherembodiment of the invention. It should be noted that, the embodiment ofFIG. 4 adopts the reference numbers and part of the content in theembodiment of FIG. 1A to FIG. 1E, where identical or similar referencenumbers are used to indicate identical or similar components, andrepeated description for the same technical contents is omitted. Theomitted part of the description can refer to the foregoing embodiments,which are not repeated in the following embodiments.

With reference to FIG. 4, the pixel array 20 includes the pixel unit100, the pixel unit 200 and a pixel unit 600, where the pixel unit 600is similar to the pixel unit 200.

In the pixel array 20, the second scan line SL2 electrically connect thefirst scan line SL1 to the third scan line SL3, and the second data lineDL2 is located between the first data line DL1 and the third data lineDL3. In an embodiment, extending directions of the first data line DL1,the second data line DL2 and the third data line DL3 are substantiallyidentical, and extending directions of the first scan line SL1, thesecond scan line SL2 and the third scan line SL3 are substantiallyidentical.

The fifth pixel electrode PE5 and the sixth pixel electrode PE6 arerespectively disposed on the first side W5 of the third scan line SL3and the second side W6 of the third scan line SL3. The fifth switchelement TFT5 is electrically connected to the third scan line SL3, thethird data line DL3 and the fifth pixel electrode PE5. The sixth switchelement TFT6 is electrically connected to the sixth pixel electrode PE6.

A fourth common line 620 is located on the first side W5 of the thirdscan line SL3. The fifth common line CL2 is electrically connected tothe fourth common line 620. In the present embodiment, the fifth commonline CL2 is disposed intersecting with the fourth common line 620. Asecond connection structure CS3 electrically connect the fourth commonline 620 to the fifth common line CL2. The first common line 120, thesecond common line 220, the third common line CL1, the fourth commonline 620 and the fifth common line CL2 are electrically connected to thefirst voltage.

In addition, in an embodiment, the third common line CL1 is locatedabove the first data line DL1, the fifth common line CL2 is locatedabove the second data line DL2, and the sixth common line CL3 is locatedabove the third data line DL3. The first common line 120, the secondcommon line 220, the third common line CL1, the fourth common line 620,the fifth common line CL2 and the sixth common line CL3 are electricallyconnected to a first voltage.

A third conductive line 610 includes a fifth extending portion 612 and asixth extending portion 614. The fifth extending portion 612 is locatedon the first side W5 of the third scan line SL3, and the sixth extendingportion 614 is located on the second side W6 of the third scan line SL3.In an embodiment, the fifth extending portion 612 and the sixthextending portion 614 extend along the extending direction of the thirddata line DL3, and the third conductive line 610 further includes athird branch portion 616 extending along the extending direction of thethird scan line SL3. The first branch portion 116, the second branchportion 216 and the third branch portion 616 are electrically connectedto each other. In the present embodiment, the first conductive line 110,the second conductive line 210 and the third conductive line 610 areelectrically connected to a second voltage.

In an embodiment, a quantity ratio of the connection lines to theconnection structures in the pixel array is 1 to 2, but the invention isnot limited thereto. In other embodiments, the quantity ratio of theconnection lines to the connection structures in the pixel array may beadjusted based on actual requirements.

Based on the above, the first conductive line 110, the second conductiveline 210 and the third conductive line 610 in the pixel array 20 of thepresent embodiment are applied with the second voltage different fromthe first voltage. Accordingly, the transmittance of the liquid crystaldisplay device may be significantly increased by utilizing the voltagedifference between the first voltage and the second voltage. Inaddition, when a pixel unit is damaged, the damaged pixel unit can berepaired into the dark spot through the first common line 120, thesecond common line 220, the third common line CL1, the fourth commonline 620, the fifth common line CL2 or the sixth common line CL3.

FIG. 5 is a top view of a pixel unit in a pixel array according tofurther another embodiment of the invention. It should be noted that,the embodiment of FIG. 5 adopts the reference numbers and part of thecontent in the embodiment of FIG. 2A, where identical or similarreference numbers are used to indicate identical or similar components,and repeated description for the same technical contents is omitted. Theomitted part of the description can refer to the foregoing embodiments,which are not repeated in the following embodiments.

The pixel array of the present embodiment includes a pixel unit 700, andthe embodiment of FIG. 5 is similar to the embodiment of FIG. 2A, exceptthat a third common line CL4 of the embodiment of FIG. 5 is differentfrom the third common line CL1 of the embodiment of FIG. 2A.

In the present embodiment, the third common line CL4 includes a thirdextending portion CL4A and a fourth extending portion CL4B. At leastpart of the third extending portion CL4A extends along the extendingdirection DR2 of the first scan line SL1, and the fourth extendingportion CL4B extends along the extending direction DR1 of the first dataline DL1. The fourth extending portion CL4B and the third extendingportion CL4A are connected together, and the fourth extending portionCL4B is disposed on the first data line DL1. The first common line 320and the third common line CL4 are electrically connected to a firstvoltage, and the first conductive line 310 is electrically connected toa second voltage.

In an embodiment, the first scan line SL1, the first conductive line310, and the first common line 320 are made of the same layer. In anembodiment, the first data line DL1 and the first connection line 340are made of the same layer. In an embodiment, the first pixel electrodePE1, the second pixel electrode PE2 and the third common line CL4 aremade of the same layer.

Based on the above, the first conductive line 310 in the pixel array ofthe present embodiment is applied with the second voltage different fromthe first voltage. Accordingly, the transmittance of the liquid crystaldisplay device may be significantly increased by utilizing the voltagedifference between the first voltage and the second voltage. Inaddition, when a pixel unit is damaged, the damaged pixel unit can berepaired into the dark spot through the first common line 320 or thethird common line CL4.

In summary, the first conductive line and the second conductive line inthe pixel array of the invention are applied with the second voltagedifferent from the first voltage, such that the transmittance of theliquid crystal display device can be significantly increased byutilizing the voltage difference between the first voltage and thesecond voltage. Moreover, a damaged pixel unit can be repaired into thedark spot through the first common line, the second common line or thethird common line. In an embodiment, the first conductive line and thesecond conductive line in the pixel array commonly constitute a meshstructure in the extending direction of the scan line and the extendingdirection of the data line, such that the pixel array can provide a moreuniform voltage distribution. In an embodiment, the first common line,the second common line and the third common line in the pixel arraycommonly constitute a mesh structure in the extending direction of thescan line and the extending direction of the data line, such that thepixel array can provide a more uniform voltage distribution.

It will be apparent to those skilled in the art that variousmodifications and variations can be made to the structure of the presentinvention without departing from the scope or spirit of the invention.In view of the foregoing, it is intended that the present inventioncover modifications and variations of this invention provided they fallwithin the scope of the following claims and their equivalents.

What is claimed is:
 1. A pixel array, comprising: a scan line; a dataline, disposed intersecting with the scan line; a first pixel electrodeand a second pixel electrode, respectively disposed on a first side ofthe scan line and a second side of the scan line; a first switchelement, electrically connected to the scan line, the data line and thefirst pixel electrode; a second switch element, electrically connectedto the second pixel electrode; a first common line, located on the firstside of the scan line; a first conductive line, comprising a firstextending portion and a second extending portion, wherein the firstextending portion is located on the first side of the scan line, and thesecond extending portion is located on the second side of the scan line;a connection line, crossing the scan line so as to electrically connectthe first extending portion to the second extending portion; and a thirdcommon line, the third common line comprising a third extending portionand a fourth extending portion, wherein the third extending portionextends along an extending direction of the scan line, the fourthextending portion is disposed on the data line, and the fourth extendingportion is connected to the third extending portion, wherein the firstcommon line and the third common line are electrically connected to afirst voltage, the first conductive line is electrically connected to asecond voltage, and the scan line and the first conductive line are madeof the same layer.
 2. The pixel array as recited in claim 1, wherein thefirst extending portion and the second extending portion extend along anextending direction of the data line, and the first conductive linefurther comprises: a first branch portion, extending along the extendingdirection of the scan line, and being connected to the first extendingportion or the second extending portion.
 3. The pixel array as recitedin claim 1, wherein the first common line comprises a groove, and atleast part of the first extending portion of the first conductive lineis located in the groove.
 4. The pixel array as recited in claim 1,further comprising: a sharing element, wherein the second pixelelectrode and the second switch element are electrically connected tothe sharing element, and the second switch element is electricallyconnected to the scan line and electrically connected to the data linethrough the first switch element.
 5. The pixel array as recited in claim1, wherein the first common line comprises: a main portion, extendingalong the extending direction of the scan line; and two trunk portions,extending along an extending direction of the data line and beingconnected to the main portion, the two trunk portions overlapping withan edge of the first pixel electrode, and the first extending portion ofthe first conductive line being located between the two trunk portions.6. The pixel array as recited in claim 1, wherein the scan line, thefirst common line, and the first conductive line are made of the samelayer.
 7. The pixel array as recited in claim 1, wherein the data lineand the connection line are made of the same layer.
 8. The pixel arrayas recited in claim 1, wherein the first pixel electrode, the secondpixel electrode, and the third common line are made of the same layer.9. A pixel array, comprising: a scan line; a data line, disposedintersecting with the scan line; a first pixel electrode and a secondpixel electrode, respectively disposed on a first side of the scan lineand a second side of the scan line; a first switch element, electricallyconnected to the scan line, the data line and the first pixel electrode;a second switch element, electrically connected to the second pixelelectrode; a first common line, located on the first side of the scanline; a first conductive line, comprising a first extending portion anda second extending portion, wherein the first extending portion islocated on the first side of the scan line, the second extending portionis located on the second side of the scan line, and the first extendingportion and the second extending portion are structurally separated fromeach other at where the scan line is located; a connection line,crossing the scan line so as to electrically connect the first extendingportion to the second extending portion; and a third common line, thethird common line comprising a third extending portion and a fourthextending portion, wherein the third extending portion extends along anextending direction of the scan line, the fourth extending portion isdisposed on the data line, and the fourth extending portion is connectedto the third extending portion, wherein the first common line and thethird common line are electrically connected to a first voltage, and thefirst conductive line is electrically connected to a second voltage.